TCR A1 or Ridley bike

Hey! i'm new to cycling and I've been trying to narrow down my choice between a 2007 Giant TCR A1 (105/Tiagra) or a Ridley aluminum frame with FSA and Campy Veloce components. I could get the former for $1000 and the latter for $1200. They weigh about the same. So... which one is a better buy? Pls. let me know.